iron(III) oxide

chemical compound
ChemicalSubstance type_of_chemical_entity Q419170
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iron(III) oxide

Summary

iron(III) oxide is a type of chemical entity[1]. It ranks in the top 3% of type_of_chemical_entity entities by monthly Wikipedia readership (480 views/month).[2]

Key Facts

  • iron(III) oxide's image is recorded as Eisen(III)-oxid.JPG[3].
  • iron(III) oxide's instance of is recorded as type of chemical entity[4].
  • iron(III) oxide's CAS Registry Number is recorded as 1309-37-1[5].
  • iron(III) oxide's EC number is recorded as 215-168-2[6].
  • iron(III) oxide's canonical SMILES is recorded as [Fe+3].[Fe+3].[O-2].[O-2].[O-2][7].
  • iron(III) oxide's InChI is recorded as InChI=1S/2Fe.3O[8].
  • iron(III) oxide's InChIKey is recorded as JEIPFZHSYJVQDO-UHFFFAOYSA-N[9].
  • iron(III) oxide's chemical formula is recorded as Fe₂O₃[10].
  • iron(III) oxide's subclass of is recorded as iron oxide[11].
  • iron(III) oxide's has use is recorded as food additive[12].
  • iron(III) oxide's Commons category is recorded as Iron(III) oxide[13].
  • iron(III) oxide's has part is recorded as iron[14].
  • iron(III) oxide's has part is recorded as oxygen[15].
  • iron(III) oxide's E number is recorded as E172(ii)[16].
  • iron(III) oxide's Freebase ID is recorded as /m/01fmj4[17].
  • iron(III) oxide's UNII is recorded as 1K09F3G675[18].
  • iron(III) oxide's RTECS number is recorded as NO7400000[19].
  • iron(III) oxide's ChemSpider ID is recorded as 14147[20].
  • iron(III) oxide's PubChem CID is recorded as 518696[21].
  • iron(III) oxide's KEGG ID is recorded as C19424[22].
  • iron(III) oxide's ZVG number is recorded as 1860[23].
  • iron(III) oxide's ChEBI ID is recorded as 50819[24].
  • iron(III) oxide's DrugBank ID is recorded as DB11576[25].
  • iron(III) oxide's described by source is recorded as Meyers Konversations-Lexikon, 4th edition (1885–1890)[26].
  • iron(III) oxide's described by source is recorded as Great Soviet Encyclopedia (1926–1947)[27].

Body

Works and Contributions

Things named for iron(III) oxide include rust[28], a color[29].

Why It Matters

iron(III) oxide ranks in the top 3% of type_of_chemical_entity entities by monthly Wikipedia readership (480 views/month).[2] It has Wikipedia articles in 26 language editions, a strong signal of global cultural recognition.[30] It is known by 74 alternative names across languages and contexts.[31]

Entities named for it include rust[28], a color[29].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . cdc.gov. cdc.gov. Provenance: wikidata.org.
  4. [6] . ECHA Substance Infocard database. Retrieved . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . PubChem. wikidata.org.
  7. [9] . PubChem. wikidata.org.
  8. [10] . PubChem. wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Inverse relationships (entities pointing at this one)

  1. [28] . wikidata.org. → on this site

Inline context (facts about related entities)

  1. [29] . Wikidata. wikidata.org. → on this site

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [30] . Wikidata sitelinks. wikidata.org.
  3. [31] . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). iron(III) oxide. Retrieved May 3, 2026, from https://4ort.xyz/entity/iron-iii-oxide
MLA “iron(III) oxide.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/iron-iii-oxide.
BibTeX @misc{4ortxyz_iron-iii-oxide_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{iron(III) oxide}}, year = {2026}, url = {https://4ort.xyz/entity/iron-iii-oxide}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): iron(III) oxide — https://4ort.xyz/entity/iron-iii-oxide (retrieved 2026-05-03)

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